Portable vacuum unit for an automatic dampener system in offset printing



FIG. 1 is a top, front and right side perspective view of a portablevacuum unit for an automatic dampener system in offset printing showingmy new design, the broken line showing of hose and nozzle are forenvironmental purposes only and form no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

The ornamental design for a portable vacuum unit for an automaticdampener system in offset printing, as shown and described.